Jizhong depression due to the history and the Yellow River diversion and the Taihang Mountains Dong Lu Yongding River, the impact of Hutuohe alluvial fan to form a special morphology.

• 因受历史上冀中拗陷和黄河改道及太行山东麓永定河、滹沱河冲积扇的影响，形成特殊形貌。